static AsyncStep GetDequeueStep()
{
if (dequeueStep == null)
{
dequeueStep = RandomDelayQueuedSendsAsyncResult <TItem> .CallAsync(
(thisPtr, t, c, s) => thisPtr.itemQueue.BeginDequeue(TimeSpan.MaxValue, c, s),
(thisPtr, r) => thisPtr.currentItem = thisPtr.itemQueue.EndDequeue(r));
}
return(dequeueStep);
}
static AsyncStep GetSendItemStep()
{
if (sendItemStep == null)
{
sendItemStep = RandomDelayQueuedSendsAsyncResult <TItem> .CallParallel(
(thisPtr, t, c, s) => thisPtr.OnBeginSendItem(thisPtr.currentItem, t, c, s),
(thisPtr, r) => thisPtr.OnEndSendItem(r));
}
return(sendItemStep);
}
static AsyncStep GetDelayStep()
{
if (delayStep == null)
{
delayStep = RandomDelayQueuedSendsAsyncResult <TItem> .CallAsync(
(thisPtr, t, c, s) => thisPtr.BeginDelay(c, s),
(thisPtr, r) => thisPtr.EndDelay(r));
}
return(delayStep);
}
public DelayAsyncResult(
RandomDelayQueuedSendsAsyncResult <TItem> parent,
AsyncCallback callback,
object state)
: base(callback, state)
{
int delay = parent.GetNextDelay();
if (delay != 0)
{
this.delayTimer = new IOThreadTimer(onDelayCompletedCallback, this, true);
this.delayTimer.Set(delay);
}
else
{
this.Complete(true);
}
}
protected override IEnumerator <AsyncStep> GetAsyncSteps()
{
while (true)
{
yield return(RandomDelayQueuedSendsAsyncResult <TItem> .GetDequeueStep());
if (this.currentItem == null)
{
yield break;
}
if (this.doDelay)
{
yield return(RandomDelayQueuedSendsAsyncResult <TItem> .GetDelayStep());
}
yield return(RandomDelayQueuedSendsAsyncResult <TItem> .GetSendItemStep());
}
}
